Why it works: Butter and cheese are a kitchen classic. They rank in the top 8% of all ingredient pairs, and 7,962 recipes mention both. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Eggs Au Gratin
Ingredients
Directions
Prepare
Boil the eggs until hard, then let them cool.
Cut the eggs into thick slices.
Assemble and bake
Grease a fireproof dish with butter and lay the egg slices in it.
Sprinkle the eggs with grated cheese, fine breadcrumbs, salt, and pepper.
Pour white sauce over the top.
Sprinkle with brown breadcrumbs.
Heat thoroughly and brown under a salamander or broiler.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Butter + cheesetop 8% of all pairsAroma overlapmoderateMentioned together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Butter + saucetop 15% of all pairsAroma overlaplowMentioned together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Egg + buttertop 17% of all pairsAroma overlapmoderateMentioned together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Cheese + peppertop 18% of all pairsAroma overlapmoderateMentioned together7,861 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Cheese + saucetop 19% of all pairsAroma overlaplowMentioned together1,987 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Butter and sauce share little aroma chemistry, yet 15,338 recipes mention both: they likely work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Form the main body of the dish and set firm when heated.
- White sauce
- Adds moisture and a creamy layer that keeps the eggs from drying out.
- Grated cheese
- Melts into the sauce and browns under the heat, adding savoury flavour.
- Breadcrumbs
- Form a crisp topping that browns and adds texture.
The step that matters
Brown under a salamander or broiler. The topping needs enough heat to brown quickly while the sauce warms through. Too little heat leaves it pale and soggy, and too long leaves the top burnt before the centre is hot.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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